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What Class of fuse does the CD224N safety switch accept?

This switch accepts Class H or K fuses as standard. For current design Series F01, options include Class R fuses (field install Class R Fuse Kit HRK1020) and Class J fuses (field modify switch by moving the load base assemblies to altenate position marked in the enclosure). With Class H or K fuses installed, the switch is CSA listed for use on systems with up to 10,000 RMS Symmetrical Amperes available fault current. With Class R fuses (and HRK1020 fuse kit installed) or Class J fuses, the switch is CSA listed for use on systems with up to 100,000 RMS Symmetrical Amperes available fault current.